82211925 has 12 divisors (see below), whose sum is σ = 135923840. Its totient is φ = 43846320.

The previous prime is 82211923. The next prime is 82211933. The reversal of 82211925 is 52911228.

It is not a de Polignac number, because 82211925 - 2¹ = 82211923 is a prime.

It is a super-2 number, since 2×82211925² = 13517601224411250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82211892 and 82211901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82211923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548005 + ... + 548154.

Almost surely, 2^82211925 is an apocalyptic number.

It is an amenable number.

82211925 is a deficient number, since it is larger than the sum of its proper divisors (53711915).

82211925 is a wasteful number, since it uses less digits than its factorization.

82211925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096172 (or 1096167 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 82211925 is about 9067.0791879193. The cubic root of 82211925 is about 434.8220966273.

The spelling of 82211925 in words is "eighty-two million, two hundred eleven thousand, nine hundred twenty-five".